code: def setUp(self):
      self.old_beam = BEAM.value
      BEAM.value = 2
  
file_path: tinygrad/extra/optimization/test_beam_search.py
imports: import unittest
  import numpy
  from tinygrad.helpers import BEAM, Timing
  from tinygrad.shape.symbolic import Variable
  from tinygrad.tensor import Tensor
  from tinygrad.nn import Conv2d
label_desc: Use image node_id 1 for calling the TestBeamSearch obj's underlying member method code with example usage: obj.setUp() without return types